Size and weight is a big decision factor when you are trying to find the ideal camera for your needs.
In this section, We are going to illustrate Panasonic FX48 and Casio EX-Z550 side-by-side from the front, back and top in their relative dimensions. Panasonic FX48 has external dimensions of 95 x 53 x 22 mm (3.74 x 2.09 x 0.87″) and weighs 150 g (0.33 lb / 5.29 oz) (including batteries). Casio EX-Z550 has external dimensions of 99 x 53 x 20 mm (3.9 x 2.09 x 0.79″) and weighs 143 g (0.32 lb / 5.04 oz) (including batteries).
Below you can see the front view size comparison of Panasonic FX48 and Casio EX-Z550.
Here is the back view size comparison of Panasonic FX48 and Casio EX-Z550.
Weight is another important factor especially when deciding on a camera that you want to carry with you all day.
Casio EX-Z550 is 7g lighter than the Panasonic FX48 but we don't think this will make a significant difference.
Unfortunately neither Panasonic Lumix DMC-FX48 (Lumix DMC-FX40) nor Casio Exilim EX-Z550 provides any type of weather sealing in their body, so you have to give extra care especially when you are shooting outdoors. If weather sealing is a must-have feature for you, check these sections: Top Compact Cameras with Weather Sealing
LCD Screen Size and Features
Casio EX-Z550's 2.7" LCD screen is slightly larger than Panasonic FX48's 2.5" screen.
Unfortunately, both cameras has fixed screens so they don't tilt or flip in directions.